Roof repair on travel trailer

Any and all sillycone will need to be removed. I did it on my first camper and it IS NOT easy task to do. Nothing will stick to it.

Be careful with EternaBond... it does not stick to everything so be careful with it especially if it sticks to something and not to another as it is a real PIA to remove. I documented my nightmare HERE and the eventual time to reapir and do it correctly as noted IN THIS DISCUSSION.

be sure to research and know the correct materials to use for the given situation and existing materials.

When you say "old" how old is it? Its possible the roof is dead, so be prepared for a lot more than a basic scrap and seal

Silicone based sealants will burn EPDM rubber roofs. Assuming that you have a rubber roof. If you plan on keeping the trailer long term, I would remove the silicone which usually peels right off. Inspect the roof for visible cracking. If a large amount of cracking is present then your roof has met it's demise. You can prolong replacement by applying an elastomeric acrylic based sealant. Dicor makes this as well as others. This is really just a bandaid until you can do a complete replacement. I have done many of them and if you are at all handy you can to. Kits for a smaller trailer usually range between $500-$800.

The silicone should peel right off without a problem. Then you may need to soften any previous applied lap sealant with a heat gun and scrape off with a plastic scraper as necessary. Then clean the substrate with acetone, denatured alcohol or whatever the roof manufacturer recommends. Now your ready to apply either lap sealant or Eternabond, your choice.